These concerns all seem so silly. Furthermore, a realtime camera system has been installed at Gilbert Point to collect and transmit visible images every 3 hours and thermal images every 8 hours. Learn about our remote access options, Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska, USA. Any chance you could provide a list of ‘decent journals’? Geophysics, Marine Dates of measurements adjoin curves. Alas, her grandchildren will simply not know what ice is. Thus monitoring of both bathymetry and glacier dynamics is warranted. An often‐referenced empirical AAR (accumulation to total area ratio) value for a glacier in steady state is 0.65–0.70 [Paterson, 1994]. Growing again. Hubbard Glacier: Growing not Shrinking - See 661 traveler reviews, 1,110 candid photos, and great deals for Alaska, at Tripadvisor. Those consequences provoked her to investigate what controls the terminus position and its advance, and to estimate when the fjord might become permanently blocked. While glaciers in southern Alaska were advancing during the Little Ice Age, Hubbard Glacier underwent a dramatic retreat [Barclay et al., 2001]. [40] The rapidity of ice flow adjustment to changing conditions at Gilbert Point is striking. The Hubbard Glacier is actually growing not receding as many other glaciers. Around that same time, dam erosion proceeds to below sea level, and ice calving enlarges the channel laterally. The Hubbard Glacier ice margin has continued to advance for about a century. At Gilbert Point (Figure 2) it significantly affected upstream ice flow and stability of the glacier dam itself. This is a list of glaciers existing in the United States, currently or in recent centuries.These glaciers are located in nine states, all in the Rocky Mountains or farther west. The doom and disaster is long overdue! warrenlb, please try and compose a comment that doesn’t involve the words ‘peer reviewed’. [45] Our bathymetric surveys show that following the 2002 outburst the channel was scoured to depths of 60 m by the outburst flood and ice advance. Norwegian glaciers. Both of these things are bad in the dyspeptic world of alarmism. [43] In the 10 day period following the outburst, upstream ice speeds increased to predam levels and flow generally returned to its predam pattern of flow. David C. Finnegan/CRREL Related to Geologic Time, Mineralogy Oh dear! Hubbard Glacier and Russell Fiord study area. Now picture that entire river completely frozen, year round. /sarc Off the coast of Yakutat—200 miles NW of Juneau—Hubbard is certainly gigantic: it's more than six miles wide where it meets the ocean. [51] The combination of deep channel, strong tidal currents and warm ocean temperatures can similarly account for the reason the terminus has failed to cross the gap and close the fjord. U.S. Geological Survey (2010, December) Hubberd Glacier, Alaska. The jagged curve is derived from lake level measurements, and the smoothed curve is the modeled discharge (. [57] The annual average terminus position at Gilbert Point has remained relatively constant since 2002 despite the fact that the rest of the terminus continues to advance at rates of ∼30 m yr−1. and Petrology, Exploration Our examination of photos shows that this rapid closure was facilitated in part by development of a series of imbricate thrust faults within the moraine, similar to those observed at Taku Glacier, another strongly advancing glacier south of Juneau, Alaska [Motyka and Echelmeyer, 2003; Kuriger et al., 2006]. September 2007. September 16, 2013 – HUbbard Glacier Update However, a future surge, if powerful enough, could drive the terminus across even a deep water channel. Journal of Geophysical Research: Earth Surface. Interestingly, observations and modeling results show different events happening near simultaneously: (1) the start of ice calving, (2) the moraine beginning to erode to below sea level, and (3) moraine erosion rates increasing. At the current rate of sediment infilling, it may take another ten years before waters shallow to depths equivalent to the pre‐2002 event. Three cubic kilometers of water were released within 30 hours, with peak discharge reaching 55,000 m3 s−1 24 hours after the flood began. As far as your assertions on peer review are concerned. Gilbert Point – The Automated Laser ranging system at Gilbert Point was replaced in late August with a new updated system. The scoured basin east of this sill is gradually filling in with sediment at a rate of about 4 m yr−1 although in 2005 the channel was still about 25 m deeper than in 1999 (Figure 9). Recent Surge Behavior of Walsh Glacier Revealed by Remote Sensing Data. Check out the statistics: 76 miles long, 6 miles wide where the glacier meets the ocean, and it stands 350′ above the water, with 250 ‘ lurking below the waterline. Geophysics, Geomagnetism Future closures are of serious concern to residents of the nearby town of Yakutat because rising lake level could breach a 41‐m low point at the southern end of Russell Fjord (Figure 1). Stearns cautions, however, that these closure dates are “projections based on our current observations, and should be viewed with skepticism.” The Hubbard Glacier is the most famous growing glacier. Ice incompressibility would demand that most of this compression resulted in ice thickening. However, glacier instabilities such as surges of tributaries could trigger an anomalously rapid advance and close Russell Fjord at any time regardless of water depth. But the recent updates aren’t recent – from the site: ________________________________________ With nowhere to drain, runoff caused the water level in the fjord to rise rapidly. Only a small remnant of the moraine remained above water in the aftermath. He said that’s all from climate change and then looked all spiritual in his eyes. http://www.svalbardglaciers.org/surging_glaciers_other_glaciers.html. But Hubbard’s terminus is nearly 14 kilometers (9 miles) wide, and does not advance at the same rate across its entire width. Hubbard is one of the few glaciers that is actually growing. http://moonbattery.com/graphics/obama-francis-on-board.jpg, “While the majority of tidewater glaciers in Greenland, Antarctica and Alaska are retreating, some are advancing. The new system will also operate on the Iridium network versus the previous GOES system. March, and D.S. The captain ofour ship, the Celebrity Millenium was great (a wonderful sense of humour). [19] The first visible sign that closure was imminent was the emergence of proglacial sediment above water in front of the glacier terminus, visible on 2 May 2002. @Boulder Skeptic Really awesome! Polar bears fine. Variations of erosion rates on shorter timescale cannot be expected to be resolved with this method. [15] Acquiring bathymetric data became a priority of our investigation in the aftermath of the 2002 event. I was trying to think of any nails left to be driven home in this coffin this morning. The 1986 event was the subject of several articles [Seitz et al., 1986; Mayo, 1988, 1989; Trabant et al., 1991; Krimmel and Trabant, 1992] and received widespread attention in the press. You could monitor it in real time. By spring 2002, a subaerial push moraine developed as a result of shallow water, mobile sediments, and seasonal advance. [33] We solved the coupled equations (2)-equations (2)–(4) for B(t) and w(t) using the Matlab ODE solver. Instead, flood waters from intense rains rapidly eroded the dam and submarine sediments, widening and deepening the channel. I’ll throw in just one example of broken science peer review and how it manifests itself as well to support my comment further, for good measure… Objects, Solid Surface The ellipses depict the estimated errors. The post outburst ice flow regime overall appears to have resumed its predam pattern, with velocity gradients and directions similar to Figure 7a. Headline , dramatic glacier growth caused by global warming threatens ‘protected environment ‘. During the 2000s, the Jakobshavn was the fastest flowing glacier on Greenland, moving at about 10.5 miles per year, reports the BBC’s Jonathan Amos. Lovely plumage! Because of inherent dangers associated with a calving face, we remained at least 100 m or farther from terminus ice cliffs NOS surveys were even more conservative, keeping at least 0.25 km from calving faces. Plus even if its not warm enough to melt it, the acid oceans should make it fizz away and disappear. Hubbard Glacier, Alaska: Growing and Advancing in Spite of Global Climate Change and the 1986 and 2002 Russell Lake Outburst Floods U.S. Department of the Interior U.S. Geological Survey USGS Fact Sheet 001—03 January 2003 Alaska tidewater glacier terminus positions, 1948–2012. Hubbard Glacier, Alaska: See 661 reviews, articles, and 1,110 photos of Hubbard Glacier, ranked No.9 on Tripadvisor among 890 attractions in Alaska. Stearns cautions, however, that these closure dates are “projections based on our current observations, and should be viewed with DENIAL.” Hubbard Glacier, Alaska: Growing and Advancing in Spite of Global Climate Change and the 1986 and 2002 Russell Lake Outburst Floods U.S. Geological Survey Fact Sheet 001-03 January 2003 by D.C. Trabant, R.S. I know French in Canada was 16th century French, although over the last two generations, modern French is being taught. The ‘formal’ excuse is that melting surface water reaches the base of the glacier through moulins and lubricates the flow causing the glacier to advance and thin. A handful of Alaska glaciers are advancing and a few of those are getting bigger, but those are the exceptions. The 1986 outburst stripped the sediments from Gilbert Point to depths exceeding 35 m [Trabant et al., 1991] and redeposited them in Disenchantment Bay [Cowen et al., 1996], appreciably deepening the tidal channel and widening it to 300 m. Channel width was still about 300 to 400 m in 1999 and water depths averaged about 25 m. [9] Despite predictions of imminent glacier readvance and damming [Trabant et al., 1991], the next closure did not occur until 2002. If this had occurred, thickening ice could have significantly increased the height of the dam, and possibly made it less susceptible to the ensuing August rain event. However, a 1‐km‐long, 300‐m‐wide submerged sill to the west of Gilbert Point appears on NOS 1999 bathymetry and persists on all of our post‐2002 outburst bathymetry (Figure 8). The article appears to be another ‘alarmist claim’ that ice is growing and will block all ports. And isn’t Antarctica itself a giant glacier? “Walk toward the fire. The general pattern for glaciers is south facing (north facing in the southern hemisphere) glaciers are retreating, while north facing glaciers are advancing. The captain ofour ship, the Celebrity Millenium was great (a wonderful sense of humour). [41] As the moraine moved forward and began colliding with Gilbert Point, the boundary conditions for upstream ice changed appreciably. It seems that the mini glaciers in Glacier National Park get a lot of press because they are retreating, but Hubbard doesn’t get any press, even though it’s the largest tidewater glacier in North America. *Is the Hubbard Glacier growing? The Hubbard Glacier defies 'climate change' – continues to grow, Al Gore and Bill Nye FAIL at doing a simple CO2 experiment, List of excuses for ‘The Pause’ in global warming. Alaska's Hubbard Glacier advancing 7 feet per day! The Hubbard Glacier is actually growing not receding as many other glaciers. Helpful. Variations in Alaska tidewater glacier frontal ablation, 1985–2013. Water temperature can also play a role during an outburst flood from a glacier‐dammed lake because water above 0°C can melt ice and widen the outflow channel [Walder and Costa, 1996]. Trabant et al. I believe your position is not intellectually tenable. But at least they found their way into the headline for this article. I mean, come on, they are still using Farenheit! We also obtained the NOS 1999 survey data (http://www.oceanservice.noaa.gov/dataexplorer/) surrounding Gilbert Point and derived a bathymetric baseline to compare to post‐2002 outburst data. Thanks. FULL SCREEN - HD -From the cruise ship ms Ryndam on May 28,2009. The 2008/09 surge of central Yulinchuan glacier, northern Tibetan Plateau, as monitored by remote sensing. Raw water depth data were corrected for tidal stages based on tidal corrections made during a NOS survey of the area in 1999. Traveling by sea, cruisers experience the awe-inspiring sight of the towering frozen river of blue ice. The depth sounder was calibrated in situ against known water depths. It spans a whopping 76 miles long, 1,200 feet deep, 6 to 7 miles wide and 25 to 30 stories tall at its face. The annual average terminus position at Gilbert Point has remained constant since 2002, although there are seasonal variations of 100–200 m. The deep channel, strong tidal currents, and seasonally warm ocean water appear to have prevented the advance of this segment of the terminus despite the glacier's continued advance elsewhere along its terminus. I cannot verify that this was an official growth rate. Off the coast of Yakutat—200 miles NW of Juneau—Hubbard is certainly gigantic: it's more than six miles wide where it meets the ocean. To me it just reads like ‘here is my appeal to authority’. Physics, Solar Hubbard is one of the few glaciers that is actually growing. Morainal bank progradation and sediment accumulation in Disenchantment Bay, Alaska: Response to advancing Hubbard Glacier. I suspect the last possible thing alarmists can cite will be long-term land-locked ice (still responding to little ice-age). Because glaciologists don’t know the difference between ‘gliding downhill’ and ‘growing.’ Thank goodness ED is here to correct them. March, and D.S. Researchers from CRREL, The National Snow and Ice Data Center (Boulder, Colorado) and the USGS Alaska Science Center (Anchorage) removed the previous laser scanning system and replaced it with an updated version of the system developed by CRREL. https://en.wikipedia.org/wiki/Br%C3%BCggen_Glacier. Sediment accumulation will help reduce calving [e.g., Brown et al., 1982], thus enhancing conditions for sustained glacier advance and push moraine development and therefore for another closure. The captain ofour ship, the Celebrity Millenium was great (a wonderful sense of humour). @Philip Bradley Hubbard Glacier, one of the few growing glaciers in Alaska, advances toward Gilbert Point north of Yakutat in summer 2009. Discharge increased as erosion accelerated, with the moraine dam completely gone by 17:15 h. The inflection in the discharge curve marks an acceleration in discharge as water flow and ice calving began eroding the ice cliff, widening the outburst channel to 135 m. Discharge peaked at 55,000 m3 s−1 at about midnight with the lake draining to sea level by midday 15 August (Figures 5 and 6). Their steady accumulation may eventually trigger the next closure. Hubbard Glacier update: another closure of Russell Fiord in the making?. Sorry. In addition, the Gilbert Point terminus has advanced 100 m or more in the spring, only to retreat during the summer, well before the gap could be breached. The manuscript greatly benefited by reviews from N. Iverson, J. Walder, M. Funk, and H. Björnsson. It’s also been very active in the past, having had two major surges in the past 30 years. The southernmost named glacier among them is the Lilliput Glacier in Tulare County, east of the Central Valley of California. No need for “the warmist” to worry. http://www.rogerfromnewzealand.wordpress.com. If you do not receive an email within 10 minutes, your email address may not be registered, The Hubbard Glacier is the most famous growing glacier. They don’t seem to include some of the largest advancing glaciers in the world. The reef west of Gilbert Point probably helped to trap these sediments. This advance has now brought the terminus close to Gilbert Point at the entrance to 60‐km‐long Russell Fjord (Figure 2). 3. Well, alright then. This would include Antarctica, Greenland, Arctic islands, South America and Alaska. A smaller ship, we could get quite close and see and hear ice calving. “Understanding Hubbard’s behavior is scientifically interesting,” Stearns said, “but it also has immediate consequences for the town of Yakutat.”. This baby is a whopper. Post was not sent - check your email addresses! Most are getting smaller, fast. Alaska’s Hubbard Glacier is advancing moving toward Gilbert Point near Yakutat at an average of seven feet per day. St. Helens As a consequence, upstream ice flow decelerated from 5 m d−1 to 1.5 m d−1, with flow diverging to either side of Gilbert Point. The region adjacent to Gilbert Point, where the closure would occur, advances more slowly because seawater passing through the gap constantly erodes the ice. Glacial outburst flood sediments within Disenchantment Bay, Alaska: Implications of recognizing marine jökulhlaup deposits in the stratigraphic record. See the About>Contact menu under the header. Glaciological and marine geological controls on terminus dynamics of Hubbard Glacier, southeast Alaska. THE HUBBARD GLACIER CONTINUES ITS ALARMING RETREAT – MORE EVIDENCE OF VERY-SCARY GLOBAL WARMING! The previous system was dependent on a high-powered radio link to Haenke Island, which required significant power to operate. Feeble brains or dishonesty–take your pick. This tidewater glacier may be a bit of sleeping giant. This acceleration resulted in strong extensional strain rates, which probably fractured and weakened the ice, thus contributing to the calving collapse and channel widening during and following the flood. [56] The discharge records for the 1986 and 2002 outbursts differ significantly and reflect differences in lake height ±26 m versus 15 m) and dam types (ice versus moraine). On another note, when the authors used the phrase “should be viewed with skepticism “, did they use the “sk” word deliberately? In 2002, Stearns was attending a glaciology conference in nearby Yakutat, Alaska, a town that depends on Russell Fjord’s marine life. Source: CDApress.com. It is the largest glacier on the northwestern edge of North America. When you’re sailing towards Hubbard Glacier on a sunny day, the deep blue of its face looks like the blue of the furthest stars. This Glacier is actually advancing (growing, the only one that still is by the way) so don't be too mad about the people being excited for the ice falling We attribute these anomalies and the fact that 16 years elapsed between closures to submarine melting and mechanical calving driven by seasonal changes in water temperature and to a deep water channel.
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